-----BEGIN PGP SIGNED MESSAGE----- [EMAIL PROTECTED], you make a good point, and e-gold will refine that conversion factor to make it more accurate. send me your e-gold account number for a reward bounty. from a scientific basis, i opine that the most precise and accurate conversion factor between ounces and grams to be exactly: 31.1034768 which is derived from the NIST data stating that: 1 grain = 64.79891 milligrams (*exactly* because bold font) (see http://physics.nist.gov/Pubs/SP811/appenB9.html) also a troy ounce is *exactly* 480 grains, so we arrive at 64.79891 mg / grain * 480 grain / troy ounce * 1/1000 g/mg = 31.1034768 grams per troy ounce (for some independent form of verification, i find this number in several web based troy ounce <-> gram conversion tables) e-gold account balances are tracked by weight to 6 decimal places - in troy ounces. lets see what a difference the conversion factor might make. a spend can only occur to a precision of 6 decimal places in ounces. for a spend denominated in grams, can a conversion factor of 31.103 vary the weight amount when performed in ounces to 6 places... in some cases, the conversion factor used for a spend denominated in grams to 5 or more decimal places may effect the sixth decimal place of the actual e-gold spend (in ounces). for example a spend of 0.99995 grams will convert to .99995g = .032150 oz. using the 31.103 factor and .99995g = .032149 oz. using the exact conversion factor above. note that this variation in the 6th place is 1 millionth of an ounce. but also note...it is not possible for e-gold to transfer **exactly** .99995g between accounts regardless of the conversion factor - e-gold is currently accounted in ounces to six places. i.e. convert either ounce amount in the above example back to grams...you'll get: 0.99996145 for the first part or 0.999945675643 something for the second. *neither of which is .99995g.* that is what happens when things are converted with a floating point ratio. if you want exactness in your programmatic interfaces with the current e-gold system you need to perform your accounting in ounces to 6 places, and perform your sci and automated spends with e-gold using those ounce amounts. if your external system uses grams and you wish to interface with the current e-gold system, i can think of 2 options to choose between... 1. if your system uses grams to 4 decimal places or less (i.e. no fractional tenths of milligrams) the current conversion factor works as good as any more precise conversion factor - *but you still need to realize that e-gold spends are actually performed after converting to ounces*. 2. convert your spends to ounces using whatever method you'd like prior to presenting data to e-gold. use 6 decimal places. jay w. [EMAIL PROTECTED] > A bold statement! > > What does e-gold say? > > >e-gold is using the wrong gram-ounce conversion. The correct unit > >is one troy ounce = 31.103477 grams, exactly, not 31.103, which is > >what e-gold currently uses. I can document the source of the > >31.103477 if you care, > > Yes, document it thoroughly please. > > >but it is the correct value; any other value is wrong, > >according to generally acknowledged standards bodies. Please fix > >this. It makes a difference for those of us who are trying to > >interface with e-gold and keep our accounts in grams, not ounces. > > Please fix it! Thank you -----BEGIN PGP SIGNATURE----- Version: PGP Personal Privacy 6.5.3 iQEVAwUBOqRKPsyM0YPqVE7FAQGVQwf+JAzffD0D8VcSGu3/6l2Pn1wqXBHMZlob OCrK79CHV4gtdXRE/xkE8hrth6eBqpzd2FGpEcTE5pnGSUyIEaDXSTgkmSzc8B0G 0ITa6CJscmbtR+2VsxR6mQhSMG2MVkkJi2NVu2nCIZA+40ROvuyXOExEnkZ5uUlI i66ejSMt8R8uXFGJt5wgZNHALvG3DA0RLxDeKjbGF28Qd5SohBS0j8x+ppWqGCo+ R4xsR+UjlbdOfx9YMV2FV/hBKvZGKVvfSCYkJD76dtb06lSY+d3u+FCQLRTRxzma TvGvmQOA65ytlZgiN/9sP8v/gwo9ychVtFNO2CxZ/3R/GHjElni8Xg== =UiFR -----END PGP SIGNATURE----- --- You are currently subscribed to e-gold-list as: archive@jab.org To unsubscribe send a blank email to [EMAIL PROTECTED]
